Running-gear for cars.



IPATENTEDJ JAN. 15, 1907.

J. H. KELLY.

RUNNING GEAR FOR CARS.

APPLICATION FILED FEB. 23. 1906v 'INVENTOI? X15,

WITNESSES:

ATTORNEY.

UNITED STATES PATENT OFFICE.

Joan ii. KELLY; or Sta Francisco. e.-\I,.1ronx 1.=\.

Toall whom, it 171/0, emwern:

Be it known that I, JOHN H. 'ELLY, a' citi zen of tl 1e United States, residing at San Francisco, in the county of'San' Francisco and State of California, have invented certain new and useful Improvements in Run-- hing-Gear for Cars, of which the following is #a' specification.

This invention relates to a truck frame and bearing for the shafts thereof, the'objectot the invention being toprovide a-frame and bearingswhich can be produced very cheaply by. avoiding the ,cost of machine-work and 0 O I l n for the axle-bearin eferrlng to the drawings, 1 represents a truck-body cast in a single piece having side 2 5 members 2 with flanges 3 to hold thewooden body of the. truck-frame and having also the two 'hollow "v ndrical cross members 4 to receive the axles 5." Each cross member'isformed at the ends with the semicircular bearin s 6 to rest upon the axle and spaced.

from t e axle the entire circumference thereof between said bearings to form an oilchamber 7. a The ends of the cross members are'formed with sockets 8 to, receive the hubs 9 of the'car-wheels 10, said hubs being formed with annular grooves 11, into which are dropped U-shaped locking devices 12, passed down in slots 13 in the terminal portions of the cross, members, said locking -devices' 0 thereby retaining the wheels in place. Be tween the semicylindrical portions and the sockets are provided bushings 14, of soft metal, in annular recesses of corresponding shape in the ends of the cross members.

In casting this combined truck-frame and bearings the axles are-first insertedm their places in the sand cores for the hollow cross members, and the truck-frame is'then cast.

directly upon the axles. This causes the 56 part of the hearing which is cast upon theaxle to be chilled, therebyhardening its'surfaee:and also prov d ng a smooth surface rezqulrin fno maelnnmg It 1s, ho 'ever', of

v drawings, Figure 1 isr Specification of Letters Patent.

Application filed February 23,1906; Seri ii an. 302.588. 3

v I t i can readily be withdrawn. -t-ion, therefore, the truck-frame and. the

bearings for all four wheels thereof are,

RUNNIN -GEAR: For; oARs.

rammed Jan. 15, i907.

be so fprmed that the metal poured in only covers one-half of the axle. for it more than one-half of the bearing were cast around the axle it would be impossible to withdraw the 1 latter... It results from this that an exact semicircular bearing is provided havmga chilled surface. This is an important tea ture of the invention.

The truck-frame andbearings a re also cast upon the chilled-iron bushings l4. and for this pu rpose the bushings are first cast it )on a mandrel of slightly-larger diameter than the shaft' say one thirty-second of an ineh. Theyare also formed with a V-shaped split 15.. They;- are then placed upon the shaft, and 'the'frame'and bearings are cast upon them. In this-way the bushing can expand when heated by the pouring of the molten metal and without cracking. When it again cools, 1t resumes its original diamete'alnd By tlns invenformed Very cheaply and simply.

The same method is applied for forming on each shaft t-he bushing 16 for the wheel, one

of the wheels being fixed upon the shaft and theother revolving thereon to enable the .wheels to roll on curved portions of the track ,wi'thout sliding friction. ;-wheel u )onthe shaft, the corresponding end ol the sl 'lo so secure one 1aft-tl'1at on the right in-Fig. 3--is formed with a semicircular recess 18, and the hub of" the wheel is formed with a corresponding log 19, fitting in said recess and n'eventing the ,wheel turning on the shaft.

This bushing is also first formed with a V-' shaped split {1-7 on the'mandrel of slightlylargerdiameter.

vI claim 1. 'Atruek-irame and axle-bearings'the'refer cast in one piece, substantially as described. I I

' 2. truck-frame eomprisingside ine1n hers and cross or end members. 'tjlrela'tter beind hollow, and having formed thereinaxlebearings. all cast in one piece, substantially as deseribml. 3. A truck-frame comprising side members and cross or end members, the latter being hollow, and having formed therein axlebearlngs 1n cross-section not'lnore than :1 semicircle, all'cast in one piece, subst an! tally l rea 1m oaane that-the sandeore should las described.

...im -iis u A l ei1ig hollow. and lnn ingformecl' -therein lulled aXle-beanngs, all cast 111 one piece,

{A ti uek frame' comprising side mom-- rs and cross or'e'nd members, the latter bstantiall v a is described I 5. A truck-frame comprising sitle menibers anil eross'or end members, the lattei being: hollow," and having formed therein axle-benrmgsini cross-section not more than [0 a Semieircler subst antiall as described.

6.- A tr ujek-frame comprising side members and cross or end-members, the latter being hollow. 'antl havlng form'ed therein chilled axle'ibearings, substantially as hand in the presence of two subscribing wit- 2 5 m s.- a t J. H. KELLY.

\Yitnesses;

BESSIE GORFINKEL,

i Axx E P-ETERSON. 

